When I generate the first image it always comes out in aspect ratio 1:1. How to change default aspect ratio from Square (1:1) to Widescreen (16:9)?
If you're in the Text to Image module you can click on the right-hand side there should be a drop-down for "Aspect ratio." Click on the drop-down and then choose "Widescreen (16x9)"
I know this, but before I enter the Text to Image module, I first have to enter the prompt, press Generate, and Firefly always automatically generates a 1:1 image. Only after that, I can change the Aspect ratio. This way I waste unnecessarily one generation.